Brutus et al. get him later.
If Caesar doesnot retaliate with proscriptions...
Had not Caesar went to the Theatre of Pompey where the Senate met he would have been informed about the plot to assassinate him (in OTL a Senator tried to warn him but his servant arrived too late in Caesar's home) and the "Liberators" would have been dead within days...
Doesn't he lose face by not going ? I was under the impression he was having some definite political problems at the time. If he stays away due to his fears it will be seen as additional weakness
Best Regards
Grey Wolf