Its not the end for our blades, newer CM7s are really good. Cm7 has been the best ROM ever since N100 or so IMO.
BTW anybody on the new 2.3.5 CM7 nightlies?, 2.3.5 ver doesn't do well at all on my phone. It becomes very laggy.
You need to partition your SD card before using A2SD or S2E, use ROM manager to partition SD card and partitioning card will wipe all data on card. So backup all data on SD before partitioning.