interesting discussion going on here with some really good comments. here's how I personally see it...
monday - looks like an electro-laden night indeed. the thing is, the youngsters seem to really love it. and the only real competition style-wise will be david guetta at ushuaïa that night. but of course monday is one of the strongest nights on the island with circoloco, cocoon, ASOT and the aforementioned guetta. so it will definitely be interesting to see how epica works.
tuesday - i still remember when flower power was just 4-5 times a summer and how absolutely rammed it used to be. and i remember all the people who always missed out because they weren't here on the right dates. now, in 2011 they did it by-weekly in peak season and last year, they already went weekly in july and august. and do you really think they would put it on weekly if it didn't work last year? as freakstar correctly said, it's gonna be much nicer to have a bit of room - flower power used to be as rammed as amnesia closing when it was only a few times a summer. and last but not least, flower power is the perfect night to reflect 40 years of pacha and is just something completely different.
wednesday - definitely the most interesting night music-wise for me personally. main competition will be dc10 and sankeys (music-wise) that night. it will be really interesting to see the full line ups, but i do like the direction pacha are taking with putting on a party like that.
thursday - no comment needed, never change a winning team.
friday - disagree about comparing pure pacha with insane. pure pacha was almost 50/50 mainstream and underground while insane will be purely underground. apart of this, the crowd will be completely different. at pure pacha you always had the tipical tong followers to a certain extent, no matter who the guests were. again, i love the fact pacha are doing something different and am excited to see the full line ups. main competition will be amnesia and ushuaïa (to a certain extent) that night, plus sankeys.
saturday - "new" pure pacha will be almost exclusively mainstream. and apart of matinée there is no other mainstream night on the island on a saturday (and matinée is still a bit different). plus, don't forget about all the locals who work during the week and only have fri and sat to go out. they'll also be happy to see some more big mainstream artists on their night out.
sunday - two things about the solomun discussion. first off, the dyinamic night at sankeys on tuesdays goes up against a few general biggies: coxy, together and the soon to be officially announced ushuaïa tuesday. so it's not like there's no choice for popular nights on a tuesday. plus, not everyone likes sankeys. most people either love or then hate it. so here's the opportunity to see solomun in another club on another night. of course, sunday isn't a quiet night neither with we love and more, plus I'm aware not everyone loves pacha.
generally, it will be very interesting to see how all the pacha nights work this summer. i agree that the new ones will need a lot of pr support. and even though we didn't get any ticket prices yet, i think there is a fair chance of attractive prices for those new nights. the guys at pacha understand the situation they're in now with such a changed programme and they exactly know about their competition. i also agree that some people will be put off seeing "morillo no more" at pacha, but on the other hand, as pacha is such a strong and iconic brand, there's also a lot of people who will go to pacha anyway, either no matter what's on, or then they'll just say "at least once in our holiday" and choose the night they like most.
also, and this is a bit off-topic now (just because of the solomun discussion), but as much as i love what sankeys have planned for this summer (underground house nights from monday to sunday), only time will tell if people are happy with such little variety if that makes sense. they definitely have their niche and let me be clear, david and his crew have put up an amazing weekly programme if you're an underground lover, but maybe it might be too much of the same really. i'd love to be wrong though!
