Wanderers could be made more available. I mean, what's the
deal that an ancient level 89 player with 60 completed quests
does not have even close to enough special rooms to get a
second wanderer level? There are players, who have limited
time to party and as it is, it seems that those players won't
be getting 2nd wanderer level in near future without
investing a lot of time to exploring.

As it is, if I want to even try casting an 'escape velocity',
which fails "nicely" at the 1st level skill/spell percentages,
it takes me some 5+ attempts to even finish the spell before
going to -sp and collapsing the vortex if I am unequipped with
spr items (with 650sps and around 100spr). I guess the second
level might help..

As it is either I have to summon a demon, get some spr items out
of chest or do some tricks to boost spmax - just to get the spell
through and to see it failing two times before succeeding.

This grants me (nakedly) roughly less than 1/15 success rate.
Takes kind a long time to get from continent A to continent B.

At least add a warning that the 1st level requires 800+ sps,
and two full caster guilds' spregen to cast.

Well, first off, ancient players should be considered here as a negative
thing, not as a positive. Ancient players have taken the option to start

which means cutting explore to 0 too. It is every rebirthers choise, don't
blame others for it.
Secondly, wanderers use spells that are more spellcaster oriented. It might
not be a real surprise that hybrid spmaxes cannot handle it with just one
level. At least not alone. Do remember that you can get help with the vortex
if more people are present with wanderers.